Beating-roll for paper-pulp or other engines.



PATENTED JUNE 25, 1907. H. BENNETT. BEATING ROLL FOR PAPER PULP OR OTHEREN GIN ES.

APPLICATION FILED AUG. 23, 1906.

g. crmrm.

formation of slots or notches in-the bars- HARRY BENNETT, or LATROBE,PENNSYLVANIA.

BEATlNG-ROLL FQR PAPER-P ULP OR OTHER ENGINES.

To all whom it may concern.-

Be it known that'I, HARRY BENNETT, a

citizen of the United States, residing at' Latrobe, in the county of Westmoreland and State of Pennsylvania, have invented certain newanduseful Improvements in Beatll'lg-ROllS for Paper-Pulp or other Engines,

of which the following is a s ecification.

This invention relates to eating rolls for paper-pul or other engines.

l-Iereto ore rolls of the present character have been constructed tosecure the bars and heads together by meansof rings or bands encirclingthe roll, the rings or bands being shrunk or otherwise secured in place-upon the roll. Another mode has been to emplo blocks between the barsin combination wit the rings or hands. In the use of these rings orhands, it has been customary to form slots or notches in the ends of thebars and sometimes intermedia'tc the ends thereof. The

greatly reduces their strength, especially at their points of connectionwith the heads, resulting in breakage of thebars, and sometimes,considerable damage to other parts of the engine. Further, the rings orbands become displaced-with the result that the bars and other parts ofthe roll have been broken. If the rings or hands become displaced, andblocks are employed between the bars, they also become dislodged. Whenthese mishaps occur, the machinery is not only broken but considerabletime is lost in making repairs, and sometimes, new machinery isnecessary.

It is the aim of my invention to overcome these and other defects in thepresent type otitieating engine rolls used in paper or other 1111 s. a a

It will therefore be understood that m invention resides in effecting apositive 100 g connection between the heads of the roll and the barswithout the use of blocks, rings,

' bands, or any other form of separate or supplemental means, my lockingmeans being preferably part and parcel of certain of the elementsconstituting the roll.

Another object is to provide a simple, in-

cx )ensive durable and ellicicnt device of the character stated.

With the above and dther objects in view, the present invention consistsin the combination and arrangement of parts hereinafter more fullydescribed, illustrated in the accompanying drawings, and particularlypointed out in the appended claims.

Specification of Letters Patent. Application filed August 23,1906.Seria1No.381.806.

.jections according to the number of Patented June 25, 1907.

In the drawings: Figure 1 is a longitudinal sectional view of myimproved roll, the dotted lines indicating a bar in position withrespect to the heads prior to its longitudinal movement intointerlocking engagement with the latter; Fig. 2 is a transversesectional view; and Fig. 3 is'a detail perspective view of one of thegrinding bars.

Referring now more particularly. to the accompanying drawings, thereference character 1 indicates a disk or other shaped end heads, and 2an intermediate head referably of the same formation as the end eads. If

desired, this intermediate head'may be eliminated from the structure.All the heads are cast or otherwise formed of metal or any othersuitable material. The mounted upon a shaft 3 or other suitable bearingand are connected by the grinding bars 4. Each head has sockets 5 in itsperiphery arranged to aline with the sockets of the other heads toreceive the grinding bars 4. The outer ends of the sockets arecontracted with respectto the inner ends thereof for'a purpose presentlyunderstood.

To assemble the parts, the sockets of the heads are-arranged to aline,and abar is inserted into corresponding alining sockets with its seriesof projections 6 adjacent the heads, as shown in dotted lines in Fig. 1.When the bar is thus disposed it is moved or heads are driven in anysuitable manner longitudinally of the roll to force its projectionstightly into the enlarged base portions or inner ends of the socketswhereby the bar is held so firmly in its seats that when once seated itis not liable to accidental endwise lay in its seats. In other words,when the ar is once seated it is not allowed the slightest movement inits seats, but is held firml therein against endwise or other play, untiit is desired to remove it from its .seats when it may be drivenlongitudinally out of its seats. All the bars are secured in the headsin the same manner, resultin in the tapering projections be' wedged tigtly in their sockets against acci ental endwise displacement. Whendesired, the bars may be readily removed for cleaning or for otherpurposes.

It will be understood that the grindin bars may be formed in any shapedesired an that they may be composed of any suitable material. It willalso be understood that each bar has two, three or more taperin prg;

embodied in the roll. Another feature to be appreciated is that the barsmay be moved longitudinally of the roll in either direction to eifectthe permanent interlocking thereof with the heads. To permit of thislongitudinal movement of the bars in either direction of the roll is thereason Why I illustrate the projections tapering in the same direction.l

I obtain a positive locking connection between the bars and headsWithout the use of rings or any other separate or supplemental means,and Without reducing the strength of the bars, my improved locking meansbeing cast or otherwise formed integrally with the bars. If preferred,the smaller end of the tapering projections 6 may lie, flush with theedge of the corresponding bar to obviate a shoulder. This modificationis too obvious for illustration.

If desired I may employ the tie-rods 7, between the heads, providing thetie-rods with right and left hand screw-threads, thereby obviating theuse of nuts. It will be seen that the screw-threads of the tie-rods arenot exposed to acids when the wheel is in use, and obviously, I mayemploy other means for connecting the rods 7 to the heads.

What is claimedis 1. A beating roll comprising heads and removable barshaving means formed therewith to lock the bars 'to the heads against ac'cidental endwise play.

2. A beating roll comprising heads and bars having longitudinallytapering projecnally of the bars.

seems tions for interlocking connection with the heads to preventaccidental endwise play of the bars.

3. A beating engine roll comprising heads, and having tapering socketand projection interlocking connection with the heads to preventaccidental endwise play of the bars.

4. A beating engine roll comprising heads having recesses in theirperipheries, and bars having tapering projections for interlockingconnection in the recesses of the head, the projections of each bartapering longitudi- 5. A beating engine roll comprising heads, barshaving interlocking engagement with the heads, and screw-threaded rodsconnecting the heads, the rods having their threads confined within theheads.

6. A beating roll comprising heads and removable bars constructed andarranged for interlocking connection with the heads to preventaccidental endwise and lateral play of the bars.

7. A bar of the character described comprising a body provided withspaced, longitudinally tapering locking projections.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

his HARRY X BENNETT.

mark I Witnesses:

D. A. HOFFMAN, D. W. ULAM.

